Kingdom Protista Features · NCERT Biology

Diatomaceous earth is used in all the following EXCEPT:

  1. Abrasive polishing
  2. Filtration of oils
  3. Clarification of syrups
  4. Production of biogas
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Correct answer: Production of biogas

Because diatomaceous earth is gritty and porous, it is used for abrasive polishing and the filtration and clarification of oils and syrups. Biogas production is associated with methanogenic archaea, not with diatomaceous earth.

Difficulty: Medium Question 17 of 20

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